Seeds are borne in the ovary. The stigma may be close to the ovary or 

 separated from it by a longer or shorter stalk, the style. The stigma may 

 be simply a rough or sticky surface, or it may be a lobed, hairy, or sticky 

 expansion. 



Anthers 



Anthers 



Sweet pea 



Willow 



Anthers 



Apple 



Squash 



Surrounding the pistil, in most common flowers, are a few to very many 

 slender stalks with enlarged ends, called the stamens, from a Latin word mean- 

 ing "thread". In some species, however, the stamens and pistils are in dif- 

 ferent flowers, or even on different individual plants. The enlargement at 



Common ragweed 

 {Ambrosia elatior) 



Ironweed 

 (Vernonla arbuscula) 



Willow 

 iSalix fragilis) 



u 



.. J .. Hercules' club 



-y^ 7^ (Aralia spinosa) 



Sunflower 

 {Helianthus annuus) 



Pumpkin 

 (Cucurhita pepo) 



Goldenrod 

 iSolidago 

 speciosa) 



Sagebrush 

 iAiteniiisia tiidenlata) 



Chicory 

 iCichorium Iniybus) 



Stokes' aster 

 iSlokesia laevis) 



Beech 

 (Betula popuhlolia) 



Russian thistle 

 iSalsola pestiver) 



POLLEN GRAINS! 



^ After Pollen Grains, by R. P. Wodehouse, copyright McGraw-Hill Book Company. 



400 



